Sealing valve for gas lines



April 24,1928. I 1,667,034

' H. B. HATTON, JR

SEALING VALVE FOR GAS LINES Filed Feb. 9. 1927 INVENTOR flucsH 5. HATTONJ2.

ATTORNEY Patented Apr. 24, 1928.1

1 HUGH 12 HATTON, JR.,LO1? GLENDAL CALIFORNIA.-

i snAnrivG-vALvn on GAS LINES.

'A- mtan filed m ma 1927. Serial No. 166,981. a

My invention relates to sealing valves for I it has'for its purpose thepro- 1 more particularly adapted, although not necessarily, for gaslines ,at as gaslines, and VlSlOIl of a valve,

point where the supply lineis connected at an angle to a distributinghouse line, and which is adapted to be installed when sealing off thesupply tion, easy-installation, 7 ing the supply line against leakageand permitting the ready testing of the valve asto leakage.

I will describe only one form of'sealing valve for gas llnes embodyingmy ,111VGI1t1OI1,;

and will then pointout'the ,novel features thereof in claims. g In theaccompanying'drawing's,

Figure 1 is a tion in applied position to a gas line;

valvein end elevation and in applied'posi invention in its presentembodiment, comprises a pipe designed for'connecting a supply lines to adistributing line D, the pipe in the present instance being in the form,of a T in order to connect the lines S and D in right angular relationto each other. pipe, in the presentinstance, comprises-an elongatedtubular body 15 provided at one end with an exterior-1y threaded nipple16 for connecting the body to a gas supply line S. Between the ends ofthe body 15 is a1 second nipple 17 interiorlv screw-threaded forconnection to the distributing line D.

' The body 15 is provided with an annular valve seat 18 at a pointadjacent its connection with the nipple 16,1and against this shoulder isadapted to seat the head 19 of an elongated valve body 20; The head 19carries a washer 21 preferably formed of fiber and secured thereto by ascrew 22, the mounting of the washer being such as to engage the seat 18when the valve head is in closed position,

-The valve body 20 includes an adjusting head 23 on the opposite end ofthe body from the valve head 19, this adjusting head being exteriorlythreaded as indicated at 24 for engagement with the inner wall of thebody 15 and to thereby permit adjustment of the valve body as a unit toseat or unseat the valve head 19 with respect to the seat line, myinvention beingv characterlzed by ts simplicityof construc-;eflfectlveness 1n seal-f duct 27 is formed int 7 manner that ts mnerendcommunicates wlth :nica'tion with, atmosphere. of the duct is normallyclosed bya screw plug 28 the head of which of polygonal wrench canbeapview showing in section; I

plied for rernoymg; o l the plug; 7

,formof seahng valve embodying my inven- This I asillustrated inFigure 1. 1

age by a removal the valve head will 18; [The head 23 is provided a, itseater-'1 end with. an angular flange 25 which con-f stitutes a headpolygonal in 'fo'rmtowhichf a suitable wrench can be'applied forrotatingthe valve body as'a unit in efit'ecting an adjustment of thevalve head 2 ils clearly shown in Figure 1 that portion 1 of the valvebody 20 between the heads 19 v and 23 e is of reduced diameter toprovide .a chamber 26 between the valve body and the inner wall of thepipe body 15. An L -shaped the chamber- 26, While its outer end extends,23l forrcommu-- This latter end 1 through the. adjusting head form towhich a, suitable It is important; tov note thatthe relation ofZthefiange 25 with respect toxt he adjacent." end of the pipebody-15,,and the'relation of vthe flange with respect to the plug 28 issuch that aspecial .form of socket wrench is necessary to manipulate thevalve bjodyfand the plug. Asa result, surreptitious tampering withtheadjusting head and plug i minimized. a .7 a

plug serves to close the adjacent end of the I .pipe, yetpermitting thefree passage-of gas from one line to the other.

lVhen it is desired tosea'l oil the supply linejin respect to thedistributing line, the screw plug aforementioned .is removed and thevalve body '20 inserted, the adjusting head threadedly engaging theinner wall of the pipe body so that by rotation of the valve body thevalve head 19 can be moved into firm engagement with the seat 18,thereby effectively sealing the nipple 16 against gas leakage.

of the plug 28 and applying liquid soap to the outer end of the duct 27.If the soap bubbles it discloses the fact that the valve is leaking, asany gas passing be free to enter the inner end of the duct from thechamber 26.

Although I have herein shown and described only one form of sealingvalve for 1e valve body in such The valve can be tested as toleaks 7 gaslines embodying my inventio'n, it is to be understood that varlouschanges and.

modifications may be made therein without departing from the spirit ofthe invention and the spiritand scope of the appended claims. v

I claim:

1. A sealing valve for gas lines comprising a pipe having a seattherein, and a valve body having avalve head at one end and anadjustinghead at the other threaded in the pipe to permit adjustment of the valvehead to engage saidseat, the valve body between the heads being reducedin diameter to provide a chamber between the pipe and valve body, a ductin the valve body extend ing through the usting head and com munlcatingwlth said chamber, and a plug for closing the duct.

2. A sealing valve for gas lines comprising a T-shap'ed pipebodyin-cluding an elon-' gated tubular body, a connecting nippleat oneend of the body, and a second connectbody.

, n'iosphere.

of polygonal form, and the plugis' provided with an extensionconstitutingga "head of polygonal form, the flange being in spacedrelation to the pipe body and the extension in spaced relation to theflange, and the flange and extension terminating substan tiall flushwith the adjacent end of the pipe 4. A sealing valve for. gas linescomprising'a pipe having a seat therein, and a valve body having a valvehead and an adjusting head adjustable in the pipefto permit ad-vjustment of the valve head to engage said seat, the pipe and valve bodybeing so related' as to provide a chamber between the two,intern'lcdiate the heads oi thegb'ody,

said body having a duct con m'iunicating Wltll said ch'anib'er andopening to the at- ,mosphere, and a plug for closing the duct.

151A sealing valve comprising a pipe adapted to connect a gas supplyline with a distributing line and provided with a valve seat,'a valvebody adjustable inthe pipe'an d having a valve adapted to engage-saidseat and thereby prevent passage of gas from the, supply line to thedistributing line, the pipe and body being so related as to provideachamber between the two, means'in the body communicating with "the"defining a passage chamberand with atmosphere through which any gas from"the supply line escaping past the valve of the body into said chamberwill be vented for. detection, and means for closing the last means fromat- HUGH B, A roN, J

